We apologize for the delay in response to your query.
Looking at the information shared above, I believe that you are willing to open the pdfs open in Microsoft Edge via Acrobat Reader Plugin ?
The new Edge browser will not have any support for ActiveX plug-ins. Therefore, the Acrobat/Reader plug-in won't work with Edge. For more information, see Change in support for Acrobat and Reader plug-ins in modern web browsers.
For more information, you may refer to the related help article here- Display PDF in browser Adobe Acrobat, Acrobat Reader
Hope this answers your query.